How many letters does the top answer for “mountain in saint lucia” have?

The most common answer is grospiton (9 letters).

Crossword clue: mountain in saint lucia

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

grospiton 9 letters wd-fact-v3

pitons 6 letters wd-fact-v3

a metal spike with a hole for a rope; mountaineers drive it into ice or rock to use as a hold

qualibou 8 letters wd-fact-v3

a person from saint lucia 50% similar → saintlucian

capital of saint lucia 50% similar → castries

city in saint lucia 50% similar → castries

island in saint lucia 50% similar → saintlucia